How can I get my keyboard to load sooner?

http://askubuntu.com –
I'm not sure if I'm wording this correctly, or if it's even possible, but is there any way to make my keyboard available sooner? I can use it once Ubuntu's purple screen comes up, but I can't use it to get into BIOS. Is there a command or a document that controls this?
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so i have compiz as a startup application on my xubuntu install, it appears to be delayed a few seconds is there a way to make it run sooner, the way it is now it waits for the entire desktop to load before runnning, i want it to run more seamlessly
is there some other location i can put my compiz --replace command to make it run sooner at login

So I tried to install Ubuntu 12.04 with a cd.I downloaded evrything,burned the cd and changed the boot order from my pc.
I then restart my pc with the cd in it but all I get is a purple screen with a keyboard and a men at the bottom of the screen and it blocks there.I read that you are supposed to push a random keyboard button but when I do it,nothing happends except for 1 time where I got to anot